The Design Review Board (DRB) shall review and/or approve, as the case may be, the design of exterior construction or modifications for which a building permit, zoning permit, certificate, or discretionary planning approval is required, including any variances from Chapter 15.06 of the Richmond Sign Ordinance unless it is exempt from design review or receives administrative design review approval. Applications requiring both Planning Commission and Design Review Board approval shall be reviewed in one meeting by the DRB for recommendation to the Planning Commission.